Home / 30,388.68-41,922-19,774.44

Finding the Fourth Proportional to 30,388.68, 41,922 and 19,774.44

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Solution

The fourth proportional to 30,388.68, 41,922 and 19,774.44 is: 27,279.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,388.68 : 41,922 = 19,774.44 : x
  2. Step 2: Convert to fraction form
    30,388.68/41,922 = 19,774.44/x
  3. Step 3: Cross multiply
    30,388.68x = 41,922 × 19,774.44
  4. Step 4: Simplify right side
    30,388.68x = 828,984,073.68
  5. Step 5: Solve for x
    x = 828,984,073.68/30,388.68
  6. Step 6: Final answer
    x = 27,279.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.